| http://www.w3.org/ns/prov#value | - ers have been studying trees' ability to absorb carbon dioxide, one of the major greenhouse gases responsible for global warming, but from the ground they have only been able to get half the picture.Matt Schrader, a University of Washington researcher, said tree tops have been the hardest for scientists to access, yet are considered the most important to examine the health of trees.it is the crown .
|
